Correct option is B
Cryptorchidism is a condition where one or both testes fail to descend into the scrotum during fetal development or early infancy. It increases the risk of infertility and testicular cancer if not corrected. Surgical intervention (orchiopexy) is usually recommended between 6–18 months of age.
Explanation of options: (a) ✘ Trapping of foreskin – Describes paraphimosis, not cryptorchidism. (b) ✔ Failure of descent – Correct definition of cryptorchidism. (c) ✘ Abdominal wall closure failure – Refers to omphalocele or gastroschisis. (d) ✘ Inability to retract foreskin – Defines phimosis, not cryptorchidism.